, to this day, curious as to what they saw in this person that made them reach out and say, "come work for us and work on high-profile criminal cases." ( phone rings ) hello, it's chris. >> bergman: reynolds and the defense team decided to confront the prosecution with what they had found. the prosecution refused to drop the charges, but they were worried about dr. gill. >> this case, it all hinges on your testimony. >> bergman: so they secretly began coaching him on how to answer questions about his past and about the autopsy. >> we need to really craft some good responses to these things that we know are going to come. >> bergman: and they videotaped the sessions. >> this one, i think i really should have... slipped up. i should have... >> bergman: once the trial began, the prosecution was forced to reveal the secret videotapes and turn them over to the defense. >> ...that there are deficiencies in the autopsy. you know, we have kind of alluded to that, but i can be more specific... >> and we spent the next several days in amazement. it was the most amazing thing i've ever seen, ever. >> ..